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From: vlsi (@vlsi) <[email protected]>
To: pgjdbc/pgjdbc <[email protected]>
Subject: Re: [pgjdbc/pgjdbc] issue #2325: Support pipelining queries
Date: Fri, 27 Mar 2026 16:55:57 +0000
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

> then I'll test to see if that works as well.

I haven't noticed if you use any virtual thread specific APIs, so it is unclear why you cover the feature with `if (virtual)` check.

> Since virtual threads would usually (always?) run on the same carrier thread, the whole thing is more or less single-threaded

Imagine someone switching their Spring Boot app to virtual threads and saying something like "we don't need connection pool, just pipeline everything through a single connection".

---

Do you know practical ways to test the change?
I wonder what are the limitations and what could theoretically be put in a changelog.

Would it support just `preparedStatement.execute` or all the APIs?

---

Historically, the implementation was not designed for full thread-safety, so mutable fields in `PgConnection` might play against concurrent use of the connection.

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